EW got an exclusive look at the newest special feature in the Blu-ray combo back, which is an interactive feature placed throughout the film that offers throwbacks to important moments from the previous movies and offer insight into the series as a whole.

This first video has Jason Isaacs explaining the role of Dementors throughout the franchise in terms of their look and functionality. In case you need a quick refresher, Dementors are "dark creatures of fear and sadness." But since we're pretty up-to-date on our Dementor history, here are some other aspects of the films we'd like a closer look at.

The Evolution Of Hogwarts

The design of Hogwarts has changed pretty drastically since "Sorcerer's Stone," and we would love to know more about who decided that this turret or tower should be added here and whether there was any effort made to maintain the continuity of the look of the castle.

House Elves

There are few things that we are endeared to more in the "Potter" franchise than Dobby and the rest of the house elves at Hogwarts. They get a few specific and important mentions throughout the series, and we have a feeling that some viewers could use a nice refresher on what their deal is and why they're important.

House Ghosts

Like Dobby in "Deathly Hallows: Part 1," the house ghosts at Hogwarts have a pretty big role to play in "Deathly Hallows: Part 2," and yet they haven't had that much onscreen love since the early "Potter" flicks. Your non-dedicated "Potter" viewer might not remember how the ghosts come into play, and we also just love being reminded why Nick is Nearly-Headless.

The Weasleys

Surely the major wizarding families in the "Harry Potter" films, like the Malfoys, Potters and Riddles, are going to get their own featurette in Maximum Movie Mode, but there is one family that we love more than all the rest: the Weasleys. Plus, there are enough of them to take up at least 10 minutes of exposition during the special video.

Quidditch

Is there anything more iconically "Potter" than quidditch? Okay, maybe Harry's lightning bolt scar or John Williams' score are a bit more recognizable, but never has a fictional sport so captured the imagination so much as to inspire a real-life Quidditch World Cup to be played in "Potter's" legacy. More details are always encouraged.

What aspect of the "Potter" films would you like to be further looked at in this special feature? Let us know in the comments section below or on Twitter!